Carbureter.



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;994,195. cARBURE'mR". SYDNEY I. Paesco'rr, New York, N. Y assior to lJonathan Peterson, Brookl Y.-

` Filed Apr. ill, 1910. Serial o. 556,802.y To all whom it'may concern:Be it known that I, Stoner I. Piiaecefrr;

wing is a specification.

This invention relates to an improvement j in carbureters of the type inwhich the flow of fluid to the carbureting chamber is autoi i maticallyvaried in accordance with variations in the flow of air to thecarbureting .f chamber and one of the objects thereof is to ,f i inwhich a mixture of increased efllciency fV is obtained. t

:l Another object is to provide a device in which the fluid is subjectedto the action of 1t" heat before it is injected into the mixing chamberto facilitate its vaporization. i" A further object is to air drawnthereinto.

' Still another object is to provide a device f; simple m construction,inexpensive, readily assembled and taken apart, easy to clean; i

and keep clean, and not liable to derange- '5 ment. l t With these andother objects not specifically mentioned in view, the invention consistsin certain constructions and combinations which will be hereinafterfully described, and then specifically ointed out in the claims hereuntoappended.

lIn the accompanying drawings which form a part of this s ecificationand in which like characters o reference indicate the same-parts, Figure1 is a plan view of a device constructed in accordance with theinvention; Fig. 2 is a sido elevation of the structure shown in Fig. 1;Fig. 8 is a sec*- tional elevation. taken on the line 3-3 in Fig. 1;Fig. 4 is a sectional view taken on the line 4-4 in Fig. 2; Fi 5 is anend ele vation of the structure s own in Fig. 1,

artly broken away to show certain. parts;

ig. 6 is a sectional view taken on the line 6 6 in Fig. 2; Fig. 7 is asectional view taken on the line 7-7 in Fig. 2; and Fi 8 is an enlargeddetail view taken on the fine 8-8 in Fig. 6.

In carrying the invention into effect there rincipal elei is provided acasing for the ments of the structure. and this casing may vary withinwide limits. In the best constructions, however, and as shown, there isprovided a substantial] cylindrical casin constructed of meta and havingparti'- ltionsdivding it into a series of chambers iplained. Thesechambers, briefly described, are: a cylindrical carbureting chamberQ, anannular float chamber 3 concentric with the z carbureting chamber, anair intake 4 in i communication with the carbureting chamrovide a deviceof this general character Y rovide a device t .in which the mixture is aways formed at "g one point, regardless of the variations of l l i iber, a' fluid inlet chamber in` communication with the float. chamber, afluid conduit 'I 6 in communication with the float chamber, l and aheating chamber 7 adjacent thc con- 1 tdiit. There is also provided acap 8 having an outlet or throttle passage 9 in communication with thecarburcting chamber 2.

The casing l and cap 8 are secured together by means of a series ofbolts 10. lt is obvious, however, that other fasteninfg devices 1 iuayhe iiscdf'for this purpose i desired@ Secured to the cap 8 is an elbowl1 having a passage therethrough which is an cxten- 1 sion of thethrottle passage flhefoic referred to. 'lhis elbow is provided with aflange 1&2 arranged to be connected to the manifold l of' an engine withwhich the device is used i hy nicans` of bolts 18. It will be seen thatyi this elbow is reversible as indicated by the t dotted lines in Figs. 2and 5l. the purpose of this structure being to enablel the device tolvarying level of the fluid within the float be attached to engineshaving eithcr vertically or horizontally opening manifolds, withoutintermediate connections.

For the purpose of feeding fluid lto the carbureting chamber, there isprovidedl a fluid nozzle 14 of a well known construction and which isthreaded in a boss 15 formed in the wall separating the air intake 4from the conduit 6 before referred to. It will be readily understoodthat the nozzle may be ad'usted; that is t0 sav, moved longvtud'inullyup or down at will. This movement is necessary to vary the position ofthe delivery end of the nozzle in accordance with a chamber due tovarying density of the fluid or varying buoyancy of the float. Thisadjustment of the nozzle is ordinarily made at the factory, and furtheradjustment. is unnecessary. There is therefore provided a plug 16threaded into the casing 1. which tightly closes the. lower opening ofthe conj duit G. The conduit is in open communication with the interiorof the nozzle 11i, and the fluid flows freely from the conduit into thenozzle.

Wit-hin the float. chamber 3 is an annular float 17 made of wood or corkcovered with shellac; or, a hollow metal float may be used if desired.By an inspection of Fig. 3, it will be secu that the float chamber isalways in open communication with the conduit 6, and it will beunderstood that fluid freely flows from the float chamber to theconduit. Fluid enters the float chamber Athrough a port 18 which isnormally closed by a valve 19. This valve is in theform pf a' hemispherehaving a stem 2O projecting into the fioat chamber. When the ennularfloat 17 falls with the fiuid within the `float chamber 3, it willstrike and depress the stem 20, 'which in turn will force the S valve 19o its sentia the port 18, thereby g ipermittipng duid to' dow frein thefluid qinlet chamber 5 to the float chamber. Theg l valve 19 is suported by a float 2l within; the inlet chamber 5. It will beunderstood.; that the buoyancy of this float is insullicient to keep thevalve closed when the float 17 is resting upon the stem 20.lts'buoyancy, however, is siiflicient to keep the valve closed when thefloat 17 is out of contact with the stem 20. The tendency of the floatl21 is to turn over or capsize. This is prevented by ed. The

plrimary object of inoiinti valve on t ng the is float, instead of provifling u thc stem 20 engaging the port 1S, and by D u the walls withinwhich the valve is mount-i the float 17. Fig. 5. This pin is normally ldevice, the pipe and plug may bereversed i in position.

For the purpose of facilitating the va rzation. of the fluid at thenozzle, the mating chamber 7 before referred to is provided. A. part ofthe bot exhaust gases from the engine in connection with which thedevice is used, is led through the. pipe 28 into the cha ber 7, andthenA out through the ipe 29. t is of course to be understood) that thishcatin device may -or may i not be used as desired?r It is customary instarting an engine, to tickle the carbureter to cause a small quantityof fluid to overflow the nozzle. In the present device, therefore, thereis provided what may be termed a ticklin pin i igthrough an aperture 31in the i 30 proJectin i cap 8 into t float chamber 3 directly over heldout of contact with the float 17 by a spring 32, which also serves tohold the upper end of the pin in contact with one to cause the valve todisplace an very small particle of sediment that may ave lodged on thevalve seat thereby reventing the perfect operation of the va ve. Theconstunt vibration of the device when in use, aided bv the tendency ofthe float 21 to turn g over, will produce a slight movement ofthe?.valve on its seat without opening the port.` This slight movement issufiicient to dis-` lodge aiiy smal particle of sediment trap pcd on thevalve seat.

For the purpose of preventing sediment, or any solid impurities, fromassing into the float chamber, there is rovided a filtering screen 22through wliic the fluid passes from the chamber 5 to the port 18. This`screen may be variously mounted. .As` shown, however, it is fixed uponan exten-f sion 23 of a. plug 24threaded into the bottom osite the portlin form andi of the casing 1 at a point opf 18. This screen iscylindrica fits closelyin a recess 25 formed in one of v the partitionwalls of the casing 1 adjacent j the port 18. Within tlie walls of thisscreen i is positioned the float 21. By an inspection of Figs. 3 and 5,it will be readily understood that when the plug 24 is unscrewed fromits seat, the screen 22 and the valve 19 i and float 21 come with it,and that this action results in the perfect drainage of the chamber 5and eas inspection of the valve and float. It may here remarked that thei extension 23 of the plug 24 is above any sediment settlin alon thebottom of the i chamber 5. Fluid is ed to the chamber 5 i j through a.plpe 26, Fig. 7, from a suitable reservoir not shown. At the oppositeside of the device and at the other end of the chamber 5 is an op plug27. When it is more convenient to place the reservoir on the other sideof the spring seated valve of the ordinary type, is

ening closed by a screw arm of a lever 33 journaled on a stud 34 fixedin the wall of the ca 8. The opposite arm of this lever is provi ed witha hole 35 l, to the lever and led to a point distant from Iture 35 intbe cap, and if it is desire to lead the cord from the lever in theopposite direction, the pin may be withdrawn from the aperture 31,placedy in the aperture 35', and the lever reversed. It will beunderstood that by depressing the tickling pin, its lower end will comeinto cont-act. with and depress the float 17, which in turn will depressthe stem 20 and open the port 18 to flood the float chamber, in theusual way.

-There is provided what may be termed a l single open air intakesubstantially equaling 5., in capacity the throttle passage andterminating adjacent the nozzle: that. is to sav, thecapacity of thesingle air intake is sufficient to freely pass the maximum quantity ofair used in the device under overload con'- ditions. to the carburetingchamber. to be understood that the bottom of the carbiireting chamber islocated at the level of the upper end of the nozzle 14, for the reasonthat it is here that mixing begins. The nozzle. therefore, lies at oneend of the carbureting chamber. The intake 4 is semicircular in shape.Fig. 7. and open to the atmosphere. Its cross sectional area issubstantially equal to the cross sectional area of the throttle passage0. At the point where carbureting begins. therefore, there is alwaysinstantly available the maximum quantity of air required. and it will benoted that the air at this point surrounds the nozzle 14 Fig. 3. At theother end of the cai i, bureting chamber 2 there is provided a throttlemarking the beginning of what is by means of which a cord may be securedItisfree end of which may be attached a rod for iilgntc drops to itsnormal position and the,

ever, a needle valve 44 ig provided` this be adjusted at any time bysimply turning of the needle valve is fixed a knob 47 by sleeve is atwo-part nirgate. Fins. 3. 6 and g 8. Driven or otherwise fastened inthe carl, biireting chamber is an annular ring 48 having bosses 49 inwhich are joiiinirled two i t pintles 50 and 51. The pintle 50 is fixed.

termed the throttle passage 9. This throti lthe gates are'in thisposition. the flatfmfl tle may vary within wide limits. As shown. i endsof the pintles lie in a horizontal plane however, it consists of s plate36 clamped i and the needle v alve is'in its lowest position. bffweenthe Casin! 1 and cap 8, Fiz.'3. The two-part airgate just described ispro- This plate is provided with a plurality of vided with an -aperture57 for the PHFSMIE apertures 87 affording a plurality of pasotair and'fluid under minimum suction. Sages from the carbnretng chamber to theWhen the suction exceeds the minimumhoni throttlepassago. Operating inconjunction or both parts of the airgate will be raise withithis platois a rotattory plate 38 pro thereby. As the pintles are fixed to thevided with a plurality of apertures 39 oor. lparts ofthe airgate, one orhoth will he io respondino with the n ertnres 37 of the fixed ftated,this action resulting in operating thrc plate. Tlig is a well nown valveconstrue. cams on the pintle ends` to lift t ie sleeve 4o, tion and afurther description is believed to as shown in Fig. .8. 'llie sleevecarries the be unnecessary. The rotary plate 38 is pro. `needle valvewith it, n nd the discharge openvided with a, hollow Stem 40 rejecting`ing of the nozzle, 14 is thereby increased in through the top of the op8, and) npon its 'size and more fluid is permitted to flow from upperend ig clamped an arm 41, to ther thc nozzle. When the suctiondecreases, the

moving the arm, The movement, of the rm sleeve a'ud valve also drop totheir normal is limited by the cooperation of a Slot 42 positions. Inthe construction shown, which formed -in the arm and a post 43 fixed inthe is the preferred constriictionpthe valve is cap 8. As shown in Figs.1, 3 and 4. the A{ldllIStcd initially h screwing it. down until throttleis half open. A movement of the it Seats lightly ont e nozzle and thentiirnarm 41 in one direction will close. and a mi! I t bflk Slightly toproduce ay very small movement in the other direction will open, oicning in the end of the nozzle, just sutlithe throttle. cient to'permit enough fluid to pass-to the Within the carbureting chamber: thatis .carbureting chamber to charge the minimum to say, between the nozzle14 and the throtquantity of air passinp?rc throughthe a erture tle36-38. there is provided a valve and 57 Under Stflltlng o I rio load conitioiis. connentioni; for ropnrtionatcly varying the Thrc'lftel, IISSllCtlOn. lnClCuSCS, bOtl'i lllld fl'ow of air and uid to the mixingchamber, Mid Illl fllo admitted 1n proportionately inand this valve andthese connections may creasin uantities to the maximum. vnrv within widelimiter Ag Shown` how. It wi l e readily sccn that the valve may valvecoperating with the nozzle 14 to conthe knob 47 mld Without dllllbng Ytrol the flow of flnid to the oorhnretingother partI ofthe device. Itwill be readily chamber. This valve is threaded in a sleeve 00 l S0 thftin the @Vent 0f UY ObSlrHCtlOn 45 which is free to slide longitudinallym nl@ 07110, the "51W und Siem@ mV b@ within the hollow stem 40 of thethrottle. lifted out 0f the device Without dlstlllllnt-l Upon the upperend of the sleeve. which ny other ft 0f thedl'lcei nd l VWG m i projectsabove the upper end of the stem is'tcd t0 c om' th? nozzlcl 40 'isdumped n forked Mm 46 whioh onlt will bc readily seen that the maximumgages the post 43 before referred to, The quantities of air and f luidare always availi engagement of the forked rm with the post ahle exactlyat the point where car iireting prevents the sleeve from hmmm pn itsbegins, and that the variation of flow of ms but does not interfere withits sliding' both fluid. and a'ir is produced instantly and movement.Upon the upper projecting end; lt one Point by the Varying SUFOIL Thf'eis, therefore, but one carbureting operation at. one 'place under a-llconditions, as distin- 1' guished from'thecarbureting of a minimum zie.M Aiiantity of airwith a minimum quantity of Copemng with the come vnivomi uid., after which more air is added to the flowing stream of mixture.The mixture, L as it asses the throttle, is divided into a plurality ofstreams which re-unite immet. diately after passing the throttle. Thereis, therefore. at the throttle. a slight deflection -of a portion of theflowing stream of mixture which serves to make the mixture still i morehomogeneous. l

In view of the foregoing. and of what is already known, a more detaileddescription of the operation of the device is deemed uumenns of whichthe valve mav be adjusted in the sleeve toward or away from the nozto asemi-circular gate 52. and the pintlo 51 is fixed to a similar gate 53.The inner ends of these Dintles are flattened at 54 and 55 respectively.the flattened ends serving as cams upon which the sleeve 45 rests. The

interest of'brevity and clearness.

tiirnin l beyon the stem, an arm secured to the pro- .Changes andvariations may be made in the structure by. means of which the inventionis carried into eect. The invention, therefore, is not to be restrictedto the precse details of the structure shown and described.

What is claimed is: 1. In a carburetor, the combination withl with, alsupport for the valve, a two-part airl gate, and canis connected withthe airgate; and contacting with the su port, whereby a2 movement ofeither art o the airgate produces a movement o the valve and support.

.2. In a carbiireter, the combination with l, a fluid nozzle, of aneedle valve cooperating therewith, a sleeve for supporting the valve,

a two-part airgate, and cams connected with the airgate and contactingwith the sleeve, whereby a movement of either part of the airgateproduces a movement of the valvel i 3. In a carbiireter, the combinationwith and sleeve.

a fluid nozzle, of a threaded valve coperat- 1 ing therewith,

for supporting the valve adjustably, a twopart airgate, and camsconnected with the t with the sleeve,j\

airgate and contactin whereby a movement o either airrate produces amovement o 1 an valve.

4. In a carbureter, the combination with a fluid nozzle, of a threadedneedle valve coart of the the sleeve two-part airgate, a

end of each intle and contacting with and supporting t e sleeve.

5. In a carbureter, the combination with a vertical fluid nozzle, of athreaded needle valve coperatin therewith, lan internally threadedsleeve or supporting the valve, a two-part airgate norma ly l ing in ahori zontal plane, a pintle secure to each part of the airgate, a camformed on one end of each pintle and contacting with and su porting thesleeve, an arm carried by tie l sleeve, and a post upon which the armslides. 6. In a carbureter, the combination with i a substantiallycylindrical casing having a i .carbureting chamber centrally locatedthereg in, a fluid nozzle at one end and in line with the axis of thechamber. a rotatory throttle at the other end of the earbiiretingchamber, a hollow cap for the easing, a hollow throttle 'e stemprojecting through the cap in line with the axis of the carburetingchamber, an arin secured to the projecting end of the stem for it, asleeve within and projecting jecting end of the sleeve, a post engagingthe sleeve arm, and a needle valve threaded in the sleeve and coperatingwith the nozzle.

l an internally threaded sleeve i l o crating therewith, an internallythreaded l: s eeve for supporting the valve adjustably, a l pintlesecured to eaehf part of the airgate, and a cam formed on one name tothis spemcamon m the presence of 7. In a carbureter, the Acombinationwith cams connected with the airgate and contacting with the support,whereby a movement rtiire for the passage of er minimum suction, and

l I f either art of the air ate under suction a. fluid nozzle, of avalve cooperating tliere- E n p g reater than the minimum produces amovenient of the valve.

8. In a'carbiireter, the combination with a two-part airgate the partsof which arc independently movable, of two cams spaced a art and onecarried by each part of the air ate, a sleeve contactin' with the cams,an( a valve supported by t ie sleeve between the cams.

9. In a carburetor, the combination with a two-part airgate the parts ofwhich are interloeked, a pair of pintles spaced apart o n a common axisand supporting the airgate, a pair of cams formed on the adjacent endsof the pintles, a sleeve contacting withvthe cams, and a valve supportedby the sleeve between the cams.

10. In a carbiireter, the combination with a two-part airgate the partsof which are semi-circular and interlocked, of a pair of intles spacedapart on a common axis and supporting the airgate, a air of cams formedon the adjacent ends o the )intles, a sleeve contacting with the cams attlie center of the airgate, and a valve supported by the sleeve betweenthe cams.

In testimony whereof, I have signed my R. J. BOYLAN, FRANK H. Viox, Jr.

